Boron doping induced charge transfer switching of a C3N4/ZnO photocatalyst from Z-scheme to type II to enhance photocatalytic hydrogen production

Kim, Dong‐Hyung; Yong, Kijung

doi:10.1016/j.apcatb.2020.119538

Cited by 357 publications

(134 citation statements)

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“…They observed that boron doped ZnO illustrates type 2 alignment of band structures whereas undoped ZnO exhibits z-scheme band. Due to this dramatic change in band structures, boron-doped ZnO shows a 2.9-times higher H 2 production rate than undoped ZnO [ 31 ]. The reason for excellent photocatalytic activity of nZnO is the formation of ROS.…”

Section: Synthesis Of Nzno and Coating Process On Textilesmentioning

confidence: 99%

“…As a semiconductor, ZnO has high thermal conductivity, high exciton binding energy (60 m eV), high electron mobility and wide band gap, i.e., 3.2–3.4 eV [ 19 ]. The potential of photocatalytic activity of nZnO expands its scope in biomedical [ 20 ], industrial [ 21 , 22 ], catalysis [ 23 , 24 ], coatings [ 25 , 26 ], sensors [ 27 , 28 ], textiles [ 29 , 30 ] and energy conversion devices, i.e., fuel and solar cells [ 31 ]. nZnO has also been used in personal (sunscreen) and beauty care (cosmetics) products due to excellent ultraviolet (UV) absorption properties.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres

et al. 2021

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Zinc oxide (ZnO) in various nano forms (nanoparticles, nanorods, nanosheets, nanowires and nanoflowers) has received remarkable attention worldwide for its functional diversity in different fields i.e., paints, cosmetics, coatings, rubber and composites. The purpose of this article is to investigate the role of photocatalytic activity (role of photogenerated radical scavengers) of nano ZnO (nZnO) for the surface activation of polymeric natural fibres especially cotton and their combined effect in photocatalytic applications. Photocatalytic behaviour is a crucial property that enables nZnO as a potential and competitive candidate for commercial applications. The confirmed features of nZnO were characterised by different analytical tools, i.e., scanning electron microscopy (SEM), field emission SEM (FESEM) and elemental detection spectroscopy (EDX). These techniques confirm the size, morphology, structure, crystallinity, shape and dimensions of nZnO. The morphology and size play a crucial role in surface activation of polymeric fibres. In addition, synthesis methods, variables and some of the critical aspects of nZnO that significantly affect the photocatalytic activity are also discussed in detail. This paper delineates a vivid picture to new comers about the significance of nZnO in photocatalytic applications.

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Section: Synthesis Of Nzno and Coating Process On Textilesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres

et al. 2021

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“…Based on the review, various strategies have been proposed based on g-C 3 N 4 , including electronic structure modulation, crystal structure engineering, nanostructure and heterostructure construction. 8,[21][22][23][24][25] The construction of g-C 3 N 4 -based heterojunction can help the separation of charges at the interface, as a variety of g-C 3 N 4 -based heterojunctions has been reported, such as TiO 2 /g-C 3 N 4 , 26,27 ZnO/g-C 3 N 4 , 28,29 36 etc. MoO 3 has a large band gap of 3 eV and a high dielectric constant of 6-18, suitable for constructing heterojunction photocatalysis with g-C 3 N 4 .…”

Section: Introductionmentioning

confidence: 99%

In situconstructed oxygen-vacancy-rich MoO_3−x/porous g-C₃N₄heterojunction for synergistically enhanced photocatalytic H₂evolution

et al. 2021

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“…TiO 2 and ZnO are important semiconductor materials that are widely used in fields such as solar cells [1,2], photocatalysis [3], and environmental restoration. However, photocatalysts have low solar utilization and poor photoelectron and hole stability [4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nano-ZnO/Diatomite Composite and Research on Photoelectric Application

Yang

Liu

et al. 2021

Catalysts

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The key to the commercialization of sustainable energy conversion technologies is the development of high-performance catalysts. The discovery of a stable, efficient, and low-cost multi-function catalyst is key. We used a simple green precipitation method to load diatomite nanozinc oxide particles onto a diatomite substrate. The ZnO is nano-sized. This precipitation method produces ZnO nanoparticles in situ on diatomite. The catalyst degraded 90% of a Methylene blue solution and also degraded gaseous benzene and acetone. Not only can the catalyst be used for the organic degradation of wastewater, but it also has the potential to degrade volatile organic compounds. Photocatalytic efficiency is closely related to the generation and separation of photosynthetic electrons and holes. The effective suppression of the composite rate of photoliving carriers, and thus improvement of the photocatalytic activity, has become a key research area. At present, At present, photocatalysis is an effective technology to inhibit photocarrier synthesis, which is often studied in sewage treatment. Photocatalytic water treatment reduces the combination of photoelectrons and holes by applying an external bias, thus improving the quantum efficiency for the complete mineralization of organic pollutants. The composite catalyst was used for oxygen and hydrogen extraction reactions, and a comparison of the catalysts with various loading ratios showed that the electrolysis water activity of the in situ loaded catalyst is due to pure ZnO, and the efficiency is highest when the loading ratio is 10%. This work provides new methods for the design and further optimization of the preparation of electrolytic aqueous catalysts.

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Boron doping induced charge transfer switching of a C3N4/ZnO photocatalyst from Z-scheme to type II to enhance photocatalytic hydrogen production

Cited by 357 publications

References 61 publications

Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres

Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres

In situconstructed oxygen-vacancy-rich MoO_3−x/porous g-C₃N₄heterojunction for synergistically enhanced photocatalytic H₂evolution

Synthesis of Nano-ZnO/Diatomite Composite and Research on Photoelectric Application

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Boron doping induced charge transfer switching of a C3N4/ZnO photocatalyst from Z-scheme to type II to enhance photocatalytic hydrogen production

Cited by 357 publications

References 61 publications

Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres

Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres

In situconstructed oxygen-vacancy-rich MoO3−x/porous g-C3N4heterojunction for synergistically enhanced photocatalytic H2evolution

Synthesis of Nano-ZnO/Diatomite Composite and Research on Photoelectric Application

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Product

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In situconstructed oxygen-vacancy-rich MoO_3−x/porous g-C₃N₄heterojunction for synergistically enhanced photocatalytic H₂evolution